The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6610-00-060-0871
NSN 5996-01-423-8452
NSN 5855-01-218-3735
NSN 7035-01-406-6510
NSN 5915-01-446-9492
NSN 4140-01-114-1943
NSN 5835-00-005-7909
NSN 6610-01-476-7412
NSN 6110-00-893-2349
NSN 5996-01-100-4361
NSN 6145-00-617-2407
NSN 6130-01-390-1599